<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/images/logo.svg" alt="">
      </div>
      <!-- 登录表单区域 -->
      <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" type="password"></el-input>
        </el-form-item>
        <!-- 按钮区域 -->
        <el-form-item class="btns">
          <el-button class="login_btn" type="success" @click="login">登录</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
import { postLogin } from '@/api/user'
export default {
  data () {
    return {
      // 这是登录表单的数据绑定对象
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      // 这是表单的验证规则对象
      loginFormRules: {
        // 验证用户名是否合法
        username: [
          { required: true, message: '请输入登录名称', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        // 验证密码是否合法
        password: [
          { required: true, message: '请输入登录密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    login () {
      // 表单验证
      this.$refs.loginFormRef.validate(valid => {
        if (!valid) return
        postLogin(this.loginForm).then((res) => {
          if (res.meta.status !== 200) return this.$message.error('登录失败！')
          this.$message.success('登录成功')
          window.sessionStorage.setItem('token', res.data.token)
          this.$router.push('/home')
        })
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login_container {
  // background-color: #2b4b6b;
  background: url('../assets/images/background.webp');
  background-size: cover;
  height: 100%;
}

.login_box {
  width: 400px;
  height: 270px;
  // background-color: grey;
  // opacity: 0.3;
  background-color:rgba(122, 119, 119, 0.2);
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(122, 119, 119, 0.2);
  .avatar_box {
    height: 90px;
    width: 90px;
    border: 1px solid #eee;
    border-radius: 50%;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color:rgba(22, 20, 20, 0.2);
    }
  }
}

.login_form {
  position: absolute;
  left: 50%;
  top: 50%;
  bottom: 0;
  transform: translate(-50%, -50%);
  width: 350px;
  padding: 0 20px;
  box-sizing: border-box;
}

.btns {
  display: flex;
  justify-content: center;
}

.login_btn {
  width: 310px;
}

</style>
